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arXiv 1104.5446nucl-thhep-ph
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MiniBooNE运动学准弹性中微子截面的相对论分析

Relativistic analyses of quasielastic neutrino cross sections at MiniBooNE kinematics

J. E. Amaro, M. B. Barbaro, J. A. Caballero, T. W. Donnelly, J. M. Udias

摘要:

两种相对论方法被认为是评估准弹性双微分和积分中微子核截面。一种是基于相对论冲量近似,依赖于用相对论平均场论对核动力学的微观描述,并结合了末态相互作用的描述。第二个是基于电子散射数据所表现出的超标度行为及其适用性,由于标度函数的普适性,中微子散射反应的分析。矢量介子交换电流在两粒子两孔扇区中所起的作用也被纳入,并将所得结果与MiniBooNE合作测量的中微子最近的数据进行了比较。

英文摘要:

Two relativistic approaches are considered to evaluate the quasielastic double-differential and integrated neutrino-nucleus cross sections. One, based on the relativistic impulse approximation, relies on the microscopic description of nuclear dynamics using relativistic mean field theory, and incorporates a description of the final-state interactions. The second is based on the superscaling behavior exhibited by electron scattering data and its applicability, due to the universal character of the scaling function, to the analysis of neutrino scattering reactions. The role played by the vector meson-exchange currents in the two-particle two-hole sector is also incorporated and the results obtained are compared with the recent data for neutrinos measured by the MiniBooNE Collaboration.

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